CVE-2026-101078 deepseek-ai deepseek-harness Landlock Backend profiles.ts isolation
Local attackers can bypass Landlock sandbox isolation in deepseek-harness, potentially escalating privileges or escaping the sandbox environment.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-101078?
CVE-2026-101078 is a medium-severity vulnerability in deepseek-ai deepseek-harness, published on 28 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability has been found in deepseek-ai deepseek-harness up to 0.1.7-rc.2. Affected is an unknown function of the file packages/sandbox/sandbox-local/src/profiles.ts of the component Landlock Backend. Such manipulation leads to improper isolation or compartmentalization. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. It is advisable to implement a patch to correct this issue. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-653
Which versions are affected by CVE-2026-101078?
How do I fix CVE-2026-101078?
No fix has been published for CVE-2026-101078 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-101078 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-101078 exists.
Sources
Also known as GHSA-23q9-h232-4q79.